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index.js
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index.js
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const { isString } = require('util')
module.exports = parseArguments
/**
*
* @param {String|Array<String>} args
* @param {Object} result - internal
* @return {Object}
*/
function parseArguments(
args,
result = {
warnings: [],
positional: [],
named: {}
}) {
if (isString(args)) {
args = args.split(' ')
}
if (args.length === 0) return result
let part = args[0]
if (!isNamedArgumentPart(part)) {
result.positional.push(part)
return parseArguments(args.slice(1), result)
}
if (part.startsWith('--')) {
part = part.substr(2)
} else {
part = part.substr(1) // starts with just one hyphen ( - )
}
if (part.includes('=')) {
let [name, value] = part.split('=')
if (value === '') {
result.warnings.push(`the named argument "${name} was declared with an equal sign but a value was not detected`)
}
result.named[name] = value
return parseArguments(args.slice(1), result)
}
const nextPart = args[1]
if (!nextPart || isNamedArgumentPart(nextPart)) {
result.named[part] = true
return parseArguments(args.slice(1), result)
}
result.named[part] = nextPart
return parseArguments(args.slice(2), result)
}
function isNamedArgumentPart(part) {
return part.startsWith('-')
}